A comparative performance evaluation of DMT (OFDM) and DWMT (DSBMT) based DSL communications systems for single and multitone interference
نویسندگان
چکیده
Multicarrier modulation techniques have been proposed in the digital subscriber line (DSL) applications. In this paper, the performance of DMT (OFDM) and DWMT (DSBMT) techniques for single and multitone interference are investigated. It is shown that a DMT system is sensitive to the location of narrow band interference. DMT technique needs additional narrow band interference canceller before forward FFT transform for performance improvements. In DSBMT technique, due to a limited spectral overlap between its subcarriers, single (multi)tone interference could e ect only a few subchannels which correspond to these interferences. DSBMT has a superior performance than DMT.
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